Chemical Engineering Archives

Chemical Engineering

Prepare with the best Chemical Engineering MCQs with answers and detailed explanations for exams and job tests. Our collection covers key topics such as chemical process calculations, thermodynamics, fluid mechanics, heat transfer, mass transfer, reaction engineering, instrumentation, and plant design. These Chemical Engineering multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and job interviews. Practice online with updated Chemical Engineering MCQs to strengthen your concepts and improve technical problem-solving skills.

6101. In case of a pipe exit fitted with a nozzle, the

Conversion of kinetic head to pressure head is facilitated

Conversion of pressure head to kinetic head is facilitated

Power transmitted through the nozzle is maximum, when the head lost due to friction in the pipe is equal to one third of the total supply head

Both B and C

✅ The correct answer is option D.

6102. What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta?

0.64

1.65

0.32

0.94

✅ The correct answer is option A.

6103. Bernoulli’s equation for steady, frictionless, continuous flow states that the __________ at all sections is same.

Total pressure

Total energy

Velocity head

None of these

✅ The correct answer is option B.

6104. High specific speed of a pump implies that, it is a/an __________ pump.

Centrifugal

Mixed flow

Axial flow

None of these

✅ The correct answer is option C.

6105. Gradually varying fluid flow is an example of __________ flow.

Non-steady uniform

Non-steady non-uniform

Steady uniform

Steady non-uniform

✅ The correct answer is option A.

6106. __________ forces act on a particle moving through a stationary fluid.

Gravity

Drag

Buoyant

All of the above

✅ The correct answer is option D.

6107. Which of the following is not dimension-less?

Froude number

Kinematic viscosity

Pressure co-efficient

None of these

✅ The correct answer is option B.

6108. Centre of pressure in an immersed body is __________ the centre of gravity.

Above

Below

Either above or below; depends on the liquid density

✅ The correct answer is option B.

6109. The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the

Barometric pressure

Speed of the impeller

Diameter of the impeller

Both B and C

✅ The correct answer is option A.

6110. When the pipe Reynold’s number is 6000, the flow is generally

Viscous

Laminar

Turbulent

Transition

✅ The correct answer is option C.